Material Safety Data Sheet Section 1. Identification of the substance Product Name: 1-tert-Butyl 3-ethyl 1H-pyrrole-1,3(2H,5H)-dicarboxylate Synonyms: Ethyl N-Boc-2,5-dihydropyrrole-3-carboxylate Section 2. Hazards identification Harmful by inhalation, in contact with skin, and if swallowed. Section 3. Composition/information on ingredients. Ingredient name: 1-tert-Butyl 3-ethyl 1H-pyrrole-1,3(2H,5H)-dicarboxylate CAS number: 146257-00-3 Section 4. First aid measures Skin contact: Immediately wash skin with copious amounts of water for at least 15 minutes while removing contaminated clothing and shoes. If irritation persists, seek medical attention. Eye contact: Immediately wash skin with copious amounts of water for at least 15 minutes. Assure adequate flushing of the eyes by separating the eyelids with fingers. If irritation persists, seek medical attention. Inhalation: Remove to fresh air. In severe cases or if symptoms persist, seek medical attention. Ingestion: Wash out mouth with copious amounts of water for at least 15 minutes. Seek medical attention. Section 5. Fire fighting measures In the event of a fire involving this material, alone or in combination with other materials, use dry powder or carbon dioxide extinguishers. Protective clothing and self-contained breathing apparatus should be worn. Section 6. Accidental release measures Personal precautions: Wear suitable personal protective equipment which performs satisfactorily and meets local/state/national standards. Respiratory precaution: Wear approved mask/respirator Hand precaution: Wear suitable gloves/gauntlets Skin protection: Wear suitable protective clothing Eye protection: Wear suitable eye protection Methods for cleaning up: Mix with sand or similar inert absorbent material, sweep up and keep in a tightly closed container for disposal. See section 12. Environmental precautions: Do not allow material to enter drains or water courses. Section 7. Handling and storage Handling: This product should be handled only by, or under the close supervision of, those properly qualified in the handling and use of potentially hazardous chemicals, who should take into account the fire, health and chemical hazard data given on this sheet. Storage: Store in closed vessels, refrigerated. Section 8. Exposure Controls / Personal protection Engineering Controls: Use only in a chemical fume hood. Personal protective equipment: Wear laboratory clothing, chemical-resistant gloves and safety goggles. General hydiene measures: Wash thoroughly after handling. Wash contaminated clothing before reuse. Section 9. Physical and chemical properties Appearance: Not specified Boiling point: No data Melting point: No data Flash point: No data Density: No data Molecular formula: C12H19NO4 Molecular weight: 241.3 Section 10. Stability and reactivity Conditions to avoid: Heat, flames and sparks. Materials to avoid: Oxidizing agents. Possible hazardous combustion products: Carbon monoxide, nitrogen oxides. Section 11. Toxicological information No data. Section 12. Ecological information No data. Section 13. Disposal consideration Arrange disposal as special waste, by licensed disposal company, in consultation with local waste disposal authority, in accordance with national and regional regulations. Section 14. Transportation information Non-harzardous for air and ground transportation. Section 15. Regulatory information No chemicals in this material are subject to the reporting requirements of SARA Title III, Section 302, or have known CAS numbers that exceed the threshold reporting levels established by SARA Title III, Section 313.
Iridium-Catalyzed Enantioselective Hydrogenation of Unsaturated Heterocyclic Acids
作者:Song Song、Shou-Fei Zhu、Liu-Yang Pu、Qi-Lin Zhou
DOI:10.1002/anie.201301341
日期:2013.6.3
binding: A highly enantioselectivehydrogenation of unsaturatedheterocyclicacids has been developed by using chiral iridium/spirophosphino oxazoline catalysts (see scheme; BArF−=tetrakis[3,5‐bis(trifluoromethyl)phenyl]borate, Boc=tert‐butoxycarbonyl). This reaction provided an efficient method for the preparation of optically active heterocyclicacids with excellent enantioselectivities.
螺旋结合:一种高度对映选择性的不饱和杂环羧酸的加氢已经通过使用手性铱/ spirophosphino恶唑啉催化剂开发(参见方案; BAR ˚F - =四[3,5-双(三氟甲基)苯基]硼酸盐,的Boc =叔丁氧羰基) 。该反应提供了制备具有优异对映选择性的旋光杂环酸的有效方法。
Bicyclic Pyrrolidines for Medicinal Chemistry via [3 + 2]-Cycloaddition
作者:Vladimir I. Savych、Vladimir L. Mykhalchuk、Pavlo V. Melnychuk、Andrii O. Isakov、Taras Savchuk、Vadim M. Timoshenko、Sergiy A. Siry、Sergiy O. Pavlenko、Dmytro V. Kovalenko、Oleksandr V. Hryshchuk、Vitalii A. Reznik、Bohdan A. Chalyk、Vladimir S. Yarmolchuk、Eduard B. Rusanov、Pavel K. Mykhailiuk
DOI:10.1021/acs.joc.1c01327
日期:2021.10.1
A general approach to bicyclic fused pyrrolidines via [3 + 2]-cycloaddition between nonstabilized azomethyne ylide and endocyclic electron-deficient alkenes was elaborated. “Push–pull” alkenes and CF3-alkenes did not react with the azomethyne ylide under the previously reported conditions, and we developed a superior protocol (LiF, 140 °C, no solvent). Among obtained products were medchem-relevant
3-AMINOETHYL-N-AMIDINO-2,5-DIHYDROPYRROLE DERIVATIVES HAVING ARGININE MIMETIC PROPERTIES
申请人:——
公开号:US20020026034A1
公开(公告)日:2002-02-28
1
The present invention ocncerns new amidinopyrroline derivatives of formula (I) with the meanings of the symbols as given in the description as well as a process for their production and their use in pharmaceutical preparations.
Disclosed are β-amino acid monomers containing cylcoalkyl, cycloalkenyl, and heterocylic substituents which encompass the α and β carbons of the peptide backbone and β-polypeptides made from such monomers. Method of generating combinatorial libraries of polypeptides containing the β-peptide residues and libraries formed thereby are disclosed.